Response of the male genital system of the immature domestic duck to injections of anterior‐pituitary substances

Schockaert, J A

doi:10.1002/ar.1090500405

Cited by 41 publications

(3 citation statements)

References 15 publications

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“…Parallel results in experiments with anterior lobe hypophysis implants, extract injections, and replacement experiments, and with prolan (ZondekAschheim), suggest th at the light-induced sexual cycle reactions, in both birds and mammals, are bound up, at least in part, with anterior lobe hypophysis activity and hormone balance, in both mature and immature animals (Bourg, 1930 ;Brouha and Simonnet, 1930 ;Desclin and Brouha, 1931 ;Engle, 1931, and preceding papers ;Fourcin, 1931 ;Hill, 1931 ;Kraus, 1930;Moore, 1930;Moore and Price, 1931 ;Noether, 1930 ;Riddle and Flemion, 1928 ;Riddle and Polhemus, 1931 ;Schockaert, 1931 ;Tallent, 1931 ; and many others cited by them).…”

Section: Discussionmentioning

confidence: 99%

Modification of mammalian sexual cycles ; Reactions of ferrets ( Putorius vulgaris ) of both sexes to electric light added after dark in November and December

Bissonnette

1932

Proc. R. Soc. Lond. B.

120

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Studies by Rowan (1930 and preceding papers) and Bissonnette (1931, a, b , 1932, a, b , and preceding papers) and Bissonnette and Wadlund (1931) have shown that in juncos, canaries, crows and starlings, at least, among birds, the sexual cycle is conditioned to a great degree by daily light ration. Sexual activity in both males and females can be modified at will by altering the daily light ration with controlled electric lighting from ordinary incandescent bulbs. Gonad changes, controllable in this way, are closely correlated with migrations in juncos and crows, as demonstrated by Rowan (1930, and preceding papers), who, however, maintains that it is the added periods of muscular exercise, rather than the light, as such, that condition these changes, in spite of the fact that it is always the added light he uses, rather than exercise, to get his effects. Bissonnette disagrees, and holds it is the light that is the major factor in conditioning the changes in sexual cycles. It has been found, also, that intensity and colour, or wave-length, as well as daily period of light are factors in conditioning sexual activity in starlings, and the method of increase of light also plays a part (Bissonnette, 1931, b , 1932 ; Bissonnette and Wadlund, 1931).

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Section: Discussionmentioning

confidence: 99%

Modification of mammalian sexual cycles ; Reactions of ferrets ( Putorius vulgaris ) of both sexes to electric light added after dark in November and December

Bissonnette

1932

Proc. R. Soc. Lond. B.

120

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“…The effect of subcutaneous injections of a crude saline extract of the anteriorpituitary gland in hypophysectomized rats A crude saline extract of the anterior-pituitary gland (A.P.E.) was made after the method of Shockaert (1931) using 3 ml. of 0-85 % (w/v) NaCl for each 2 g of gland.…”

Section: Resultsmentioning

confidence: 99%

The effect of anterior pituitary extracts, desiccated thyroid, growth‐hormone preparations and ACTH on the extractable secretin of the intestines of hypophysectomized and intact rats

Dorchester¹,

Haist²

1953

The Journal of Physiology

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The finding of Dorchester & Haist (1952a) that hypophysectomy led to a reduction in the secretin content of the intestine of the rat, demonstrated that the pituitary gland influenced the activity of endocrine structures concerned with the elaboration of secretin. The results of the present investigation indicate that an important part of this influence is exerted by the anterior portion of the gland. This conclusion is based on the finding that crude extracts of the anterior pituitary and relatively highly purified growth hormone and ACTH preparations from the anterior portion of the gland prevented the lowering of intestinal secretin in the hypophysectomized animals. A preliminary report of part of this work has appeared in Federation Proceedings (Dorchester & Haist, 1952c). MATERIALS AND METHODSThe methods for the extraction of rat secretin and its assay have been described previously (Dorchester & Haist, 1952a, b). Hypophysectomized and intact Wistar and Sprague-Dawley rats were the test animals. Rats were paired according to weight, one member of each pair serving as the test animal, the other as the control. In the experiments using hypophysectomized rats, each control animal received the same amount of food as the corresponding test rat. Control and test rats were sacrificed at the same times. In one series of experiments on hypophysectomized animals the test rats received desiccated thyroid gland in the food. In another, the test rats were injected with a crude saline extract of the anterior-pituitary gland. In a third series, rats were injected daily with growth-hormone preparations, and in a fourth, ACTH was administered. Further experiments were undertaken in which anterior-pituitary extract, growth-hormone preparations and ACTH were injected into intact rats.

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“…This difference in the behavior of the sexes in pigeons seems not to be unique in birds. Schockaert (1931) reports that in ducks the testes respond more than the ovaries to injections of anterior pituitary. Domm (1931) in fowls secured a pronounced enlargement of the testes and sperm formation from implants of fowl anterior pituitaries but only slightly larger ovaries with no histological modifications.…”

Section: Implants In Other Mammals and In Birdsmentioning

confidence: 99%

The effect on the reproductive system of ablation and implantation of the anterior hypophysis.

Smith¹

1934

Sex and Internal Secretions: A Survey of Recent Research.

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Response of the male genital system of the immature domestic duck to injections of anterior‐pituitary substances

Cited by 41 publications

References 15 publications

Modification of mammalian sexual cycles ; Reactions of ferrets ( Putorius vulgaris ) of both sexes to electric light added after dark in November and December

Modification of mammalian sexual cycles ; Reactions of ferrets ( Putorius vulgaris ) of both sexes to electric light added after dark in November and December

The effect of anterior pituitary extracts, desiccated thyroid, growth‐hormone preparations and ACTH on the extractable secretin of the intestines of hypophysectomized and intact rats

The effect on the reproductive system of ablation and implantation of the anterior hypophysis.

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